const API = "http://localhost:8080/db/";



  
  // 2.请求拦截器
  axios.interceptors.request.use(function(config) {  
	const token = localStorage.getItem('token'); //这里取token之前，你肯定需要先拿到token,存一下
	if (token) {//判断token是否为空
	  config.headers.token = token; //如果要求携带在请求头中
	}
	return config;
  }, function(error) {
	return error;
  });
  

function arrayToTree(items) {
	const rootItems = [];
	const lookup = {};

	for (const item of items) {
		const itemId = item.id;
		lookup[itemId] = item;
		const parentId = item.parentid;
		if (parentId === null || parentId === "0"||parentId===0) {
			rootItems.push(item);
		} else {
			const parent = lookup[parentId];
			if (parent) {
				if (!parent.children) {
					parent.children = [];
				}
				parent.children.push(item);
			}
		}
	}

	return rootItems;
}